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first steps to the expr/stmt unification

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This commit is contained in:
Araq 2013-04-30 02:38:49 +02:00
commit 2afadc5c9c
8 changed files with 159 additions and 92 deletions
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7
compiler/semfold.nim
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@ -378,18 +378,17 @@ proc getConstIfExpr(c: PSym, n: PNode): PNode =
result = nil
for i in countup(0, sonsLen(n) - 1):
var it = n.sons[i]
case it.kind
of nkElifExpr:
if it.len == 2:
var e = getConstExpr(c, it.sons[0])
if e == nil: return nil
if getOrdValue(e) != 0:
if result == nil:
result = getConstExpr(c, it.sons[1])
if result == nil: return
of nkElseExpr:
elif it.len == 1:
if result == nil: result = getConstExpr(c, it.sons[0])
else: internalError(it.info, "getConstIfExpr()")
proc partialAndExpr(c: PSym, n: PNode): PNode =
# partial evaluation
result = n